I found out, through trial and error, that when my video export gets stuck at a certain time - freezes at 1:42 mark of the export process - that means there is a problem with the clip at that point. So, Videopad is freezing because it can't process the problematic clip.
I kept getting my export frozen at a certain point and when I went to the timeline I realized that point was the start of the problematic clip. So, I deleted that problematic clip and afterwards I exported again. The export finally worked after the deletion of the problematic clip.
Now, I wish I could keep the clip, but that isn't possible.
I tried using the clip in Davinci Resolve, but that program won't even allow me to import the clip into media because it too sees the clip as problematic.
Filmora handles the clip fine and exports fine, but Filmora isn't as good as Videopad when it comes to fade transitions and audio editing capabilities, so I want to stick with Video Pad even though I can't use the clip with Videopad.
If anyone cares about Audio, Filmora has unusable audio editing tools that are so bad, I don't understand how anyone uses them to edit their audio.